CVE-2026-4859

Description

The SP Blog Designer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'design' attribute of the `wpsbd_post_carousel` shortcode in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

PUBLISHED Reserved 2026-03-25 | Published 2026-05-12 | Updated 2026-05-12 | Assigner Wordfence

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Timeline

Credits

Djaidja Moundjid finder

References

www.wordfence.com/...-df92-40c2-a608-ccad32a9c224?source=cve

plugins.trac.wordpress.org/...rtcode/wpsbd-post-carousel.php

plugins.trac.wordpress.org/...rtcode/wpsbd-post-carousel.php

cve.org (CVE-2026-4859)

nvd.nist.gov (CVE-2026-4859)

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